obsproject.com
Windows Mac Linux
OBS, Open Broadcaster Software, is a free recording and streaming package. It can record the desktop, microphone, webcam, save to a video or audio file, screencast and stream live over the Internet.
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www.openclipart.org
All (Website)
Open Clipart is a site that hosts over 100,000 free clipart images.
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www.openelement.com
Windows
openElement is a free website development application.
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www.openoffice.org
Windows, Mac, Linux
OpenOffice is an open-source office suite similar to MS Office and Corel Office. OpenOffice includes a word processor, spreadsheet, presentation, drawing and database tools.
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www.openshot.org
Windows Mac Linux
OpenShot is a free open source video editor.
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www.opera.com
Windows, Mac, Linux, Android
Opera is a free web browser.
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